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Anatomy of a Kellner eyepiece

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#1 Pollux556

Pollux556

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Posted 17 November 2010 - 08:32 PM

Hi forum,

I bought, a few weeks ago, two made in Japan Kellner 25mm and 12mm eyepieces. They are well made and in good shape but the 12mm needs a little clean up so I parted it out.

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#2 Pollux556

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Posted 17 November 2010 - 08:33 PM

They are marked Japan circle T on the chrome barel and have the sticker « Japan Telescope Inspection Institute Passed 3 »

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#3 Pollux556

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Posted 17 November 2010 - 08:34 PM

The 25mm have a rasor edge field stop

Anybody can date it ? 70's:question:

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